Machine for finishing engine bed - fram es



(No Model.) 2 Sh ets-Sheet 1.

W. F. PARISH.

MACHINE FOR FINISHING ENGINE BED FRAMES.

Patented Dec. 22, 1885.

mine wed (No Model.) 7 Sheets-Sheet 2. W. I. PARISH.

MAGHINE FOR FINISHING ENGINE BED FRAMES. "No. 332,745.

PatentedDeo. 22,1885.

N, PETER& PhowLilhogmphen Wallxinglan. o4;

1 UNITED STATES EPA'IENT OFFICE.

WVILLIAM F. PARISH, OF MINNEAPOLIS, MINNESOTA.

MACHINE FOR FINISHING ENGINE BED-FRAMES.

SPECIFICATION forming part of Letters Patent No. 332,745 dated December22, 1885.

Application filed November 10, 1895. Serial No. 182,325. (No model.)

To all whom it may concern.-

Be itknown that 1, WILLIAM F. PARISH, a citizen of the United States,and aresident of Minneapolis, in the county of Hennepin and State ofMinnesota, have invented certain Improvements in Mechanism for FinishingEngine Bed-Frames, of which the following is a specification.

My invention relates to improvements in 'means for preparing and fittingcast-metal bed-frames of engines, to receive the several parts of theengine that are secured to or supported by them. These bed-frames areusually cast in one piece, and they have preferably a circular end,towhich the end of the cylinder is secured, and through which thepiston-rod extends. They have also a box or boxes for the crank-shaft,and supports or lugs to which the guides for the cross-heads aresecured.

The object of the present invention is to provide means for truing andaligning these supports or lugs upon which the cross-head guides aresupported.

In the accompanying drawings,forming part of this specification, Figure1 is a section of a bed-frame, showing in elevation the means forfitting the bed. Fig. 2 is a plan of the same. Fig. 3 is a section ofthe jig. Fig. 4 is a section of the centering-plates. Fig. 5 is a planwith bed-frame of another construction. Figs. 6 and 7 are detail viewsshowing the truingtools.

Figs. 1, 2, and 5 show a cast-iron bed-frame. These frames are usuallycast in one piece, and have the end A, to which the end of the cylinderis bolted; also the box or boxes 1? for the crank-shaft, and thesupports or lugs Z Z, to which the guides for the cross-head aresecured.

B E represent an arbor, having the crosspart E at right angles to themain part B. This arbor is centered in the bed-frame, and upon it aremounted the tools for truing the supports Z Z.

The bed-frame shown in Figs. 1 and 2 is for a side-crank engine, and hasbut one box P. The arbor used with this bed-frame is of L shape, havingthe cross part E projecting from one side only.

D,Fig. 1, is acenterer, havinga hole through .it adapted to fit thearbor B, and having blocks tic trued and aligned by it. These plates arese' cured to the arbor,preferably by the following means: The plates areprovided with recesses fitting the arbor, and a bolt or bolts, d, passesthrough the plates and the arbor, thus holding them firmly together. Theends of the plates project over the edge of the frame, or over a ledgebetween the supports Z Z, and are provided with adjusting-screwsff,arranged to bear on the upper and lower surfaces of such ledge or uponthe upper edge ofthe wall of the bed. The lower plate. 0, may, however,be omitted, if desired. These plates,with their adjusting-screws, centerthe arbor B between the supportsZ land bring the cross-arbor E intoposition. The arbor E may be omitted at pleasure, and no claim is madeherein to this means for fitting the boxes for the crankshaft. When thecross-arbor is used,the boxes 1? are finished by pouring Babbitt orother suitable metal around the arbor. The arbor B may be provided witha groove or grooves and the plates or plate 0 with a correspondinggroove. A key may be inserted in these grooves, thereby holding thearbor and plates in proper alignment.

In some instances I prefer to make the part of the arbor B that iswithin the bed-frame triangular or polygonal in cross-section, as shownin Figs. 5 and 6, and to provide the centering-plate with acorresponding recess to fit thereon. In this instance the grooves andkey are unnecessary.

J, Figs. 1 and 3, represents what I term a jig, carrying a tool fordressing the supports ZZ. This jig consists of a supporting block orplate mounted on the arbor and secured thereto,preferably by grooves andsplines and a set-screw, as shown in Fig. 3, or by other suitable means.

The construction of jig shown in Figs. 1, 2, and 3 is as follows: E is aplate mounted engine is complete.

on the supporting block or'plate and secured thereto byaset-screw.In'this plate ismounted a shaft, S, carrying a driving-pulley, M, and abevel-pinion, L, which meshes with a pinion, K, on a shaft, m. The shaftm carries a facing-tool, T, which is adapted to finish the surface ofthe supports Z Z. The plate B may be mounted to bring the tool on eitherside of the arbor, so that both of the supports may be faced. It is onlynecessary to true the upper surface of the bed shown in Figs. 1 and 2,but for the bed shown in Figs. 5 and 6 it is also desirable to true theunder surface of the supports. For this purpose I use,preferably, the,jig shown in Figs. 6 and 7. In this'construction two brackets, W W, areclamped to the'arbor B. The lower bracket, W, carries a truing-tool, n,mounted in a slide-rest,

10, that is carried by a revolving stud, Z, havr ing a gear, Z, intowhich meshes a pinion, Z, upon a shaft, m. The shaft m is operatedthrough pulley M, shaft S, and bevel-gears L K. By this tool n the undersurface of the supports may be trued and brought into alignment for'thereception of the cross-head guides. The tool-frame is in every instancemounted on the arbor, and all the supports are thereby brought into thesame relation to the axis of the arbor, and therefore into the samerelation to the axis of the piston-rod when the I have shownrevolving-tools for finishing the supports; but in some instances areciprocating tool carried by the jig may be used. I do not confinemyself, therefore, to the exact construction of truing-tool or operatingmeans described, it being only necessary that the Q tool be mounted onthe arbor so that the supfor operating said tool, all substantially asdescribed, and for the purpose set forth.

, 2. The combination,with an arbor andmea'ns for centering said arbor inan engine bed-frame, of a tool-frame mounted on said arbor {and carryinga revolving truing-tool for truing the supports for the cross-headguides, and means, for operating said tool, all substantially as described. j

3. The combination, with the main arborB and cross-arbor E and means forcentering said arbor in an engine bed-frame, .of the tool frame mountedon said arbor and carrying the truing-tool for truing the supports forthe cross-head guides, and means for operating Y said tool, allsubstantially as described.

In testimony whereof I have hereunto set my hand this 6th day ofNovember, A. D. 1885.

I WILLIAM F. PARISH- Witnesses: I i v I GEO. MONEIR, A. C. PAUL.

